Folks,
There is a broken ATI video driver making its way out through Windows
automated update.
I think it only effects the older ATI chips, such as the Radeon 7000,
but if PyMOL suddenly stops working for you, then that is a likely
cause. From what I understand, this can be fixed by reinstalli
Use Python blocks!
Something like that:
if (count_atoms nt) == 0
then cmd.delete("nt")
if cmd.count_atoms("nt") == 0: \
cmd.delete("nt")
Note the explicit use of "continuation" lines via backslashes. This ensures
that PyMOL hands over both lines to the Python interpret
